Austin Blackstone / Mbed 2 deprecated client-lwip-lightswitch-demo-expanded

mbed client lightswitch demo

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of mbed-client-classic-example-lwip by Austin Blackstone

mbedtls/mbedtls/ssl_internal.h@11:cada08fc8a70, 2016-06-09 (annotated)

Committer:
mbedAustin
Date:
Thu Jun 09 17:08:36 2016 +0000
Revision:
11:cada08fc8a70
Commit for public Consumption

Who changed what in which revision?

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mbedAustin 11:cada08fc8a70 1 /**
mbedAustin 11:cada08fc8a70 2 * \file ssl_ticket.h
mbedAustin 11:cada08fc8a70 3 *
mbedAustin 11:cada08fc8a70 4 * \brief Internal functions shared by the SSL modules
mbedAustin 11:cada08fc8a70 5 *
mbedAustin 11:cada08fc8a70 6 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
mbedAustin 11:cada08fc8a70 7 * SPDX-License-Identifier: Apache-2.0
mbedAustin 11:cada08fc8a70 8 *
mbedAustin 11:cada08fc8a70 9 * Licensed under the Apache License, Version 2.0 (the "License"); you may
mbedAustin 11:cada08fc8a70 10 * not use this file except in compliance with the License.
mbedAustin 11:cada08fc8a70 11 * You may obtain a copy of the License at
mbedAustin 11:cada08fc8a70 12 *
mbedAustin 11:cada08fc8a70 13 * http://www.apache.org/licenses/LICENSE-2.0
mbedAustin 11:cada08fc8a70 14 *
mbedAustin 11:cada08fc8a70 15 * Unless required by applicable law or agreed to in writing, software
mbedAustin 11:cada08fc8a70 16 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
mbedAustin 11:cada08fc8a70 17 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbedAustin 11:cada08fc8a70 18 * See the License for the specific language governing permissions and
mbedAustin 11:cada08fc8a70 19 * limitations under the License.
mbedAustin 11:cada08fc8a70 20 *
mbedAustin 11:cada08fc8a70 21 * This file is part of mbed TLS (https://tls.mbed.org)
mbedAustin 11:cada08fc8a70 22 */
mbedAustin 11:cada08fc8a70 23 #ifndef MBEDTLS_SSL_INTERNAL_H
mbedAustin 11:cada08fc8a70 24 #define MBEDTLS_SSL_INTERNAL_H
mbedAustin 11:cada08fc8a70 25
mbedAustin 11:cada08fc8a70 26 #include "ssl.h"
mbedAustin 11:cada08fc8a70 27
mbedAustin 11:cada08fc8a70 28 #if defined(MBEDTLS_MD5_C)
mbedAustin 11:cada08fc8a70 29 #include "md5.h"
mbedAustin 11:cada08fc8a70 30 #endif
mbedAustin 11:cada08fc8a70 31
mbedAustin 11:cada08fc8a70 32 #if defined(MBEDTLS_SHA1_C)
mbedAustin 11:cada08fc8a70 33 #include "sha1.h"
mbedAustin 11:cada08fc8a70 34 #endif
mbedAustin 11:cada08fc8a70 35
mbedAustin 11:cada08fc8a70 36 #if defined(MBEDTLS_SHA256_C)
mbedAustin 11:cada08fc8a70 37 #include "sha256.h"
mbedAustin 11:cada08fc8a70 38 #endif
mbedAustin 11:cada08fc8a70 39
mbedAustin 11:cada08fc8a70 40 #if defined(MBEDTLS_SHA512_C)
mbedAustin 11:cada08fc8a70 41 #include "sha512.h"
mbedAustin 11:cada08fc8a70 42 #endif
mbedAustin 11:cada08fc8a70 43
mbedAustin 11:cada08fc8a70 44 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
mbedAustin 11:cada08fc8a70 45 #include "ecjpake.h"
mbedAustin 11:cada08fc8a70 46 #endif
mbedAustin 11:cada08fc8a70 47
mbedAustin 11:cada08fc8a70 48 #if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
mbedAustin 11:cada08fc8a70 49 !defined(inline) && !defined(__cplusplus)
mbedAustin 11:cada08fc8a70 50 #define inline __inline
mbedAustin 11:cada08fc8a70 51 #endif
mbedAustin 11:cada08fc8a70 52
mbedAustin 11:cada08fc8a70 53 /* Determine minimum supported version */
mbedAustin 11:cada08fc8a70 54 #define MBEDTLS_SSL_MIN_MAJOR_VERSION MBEDTLS_SSL_MAJOR_VERSION_3
mbedAustin 11:cada08fc8a70 55
mbedAustin 11:cada08fc8a70 56 #if defined(MBEDTLS_SSL_PROTO_SSL3)
mbedAustin 11:cada08fc8a70 57 #define MBEDTLS_SSL_MIN_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_0
mbedAustin 11:cada08fc8a70 58 #else
mbedAustin 11:cada08fc8a70 59 #if defined(MBEDTLS_SSL_PROTO_TLS1)
mbedAustin 11:cada08fc8a70 60 #define MBEDTLS_SSL_MIN_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_1
mbedAustin 11:cada08fc8a70 61 #else
mbedAustin 11:cada08fc8a70 62 #if defined(MBEDTLS_SSL_PROTO_TLS1_1)
mbedAustin 11:cada08fc8a70 63 #define MBEDTLS_SSL_MIN_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_2
mbedAustin 11:cada08fc8a70 64 #else
mbedAustin 11:cada08fc8a70 65 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
mbedAustin 11:cada08fc8a70 66 #define MBEDTLS_SSL_MIN_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_3
mbedAustin 11:cada08fc8a70 67 #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
mbedAustin 11:cada08fc8a70 68 #endif /* MBEDTLS_SSL_PROTO_TLS1_1 */
mbedAustin 11:cada08fc8a70 69 #endif /* MBEDTLS_SSL_PROTO_TLS1 */
mbedAustin 11:cada08fc8a70 70 #endif /* MBEDTLS_SSL_PROTO_SSL3 */
mbedAustin 11:cada08fc8a70 71
mbedAustin 11:cada08fc8a70 72 /* Determine maximum supported version */
mbedAustin 11:cada08fc8a70 73 #define MBEDTLS_SSL_MAX_MAJOR_VERSION MBEDTLS_SSL_MAJOR_VERSION_3
mbedAustin 11:cada08fc8a70 74
mbedAustin 11:cada08fc8a70 75 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
mbedAustin 11:cada08fc8a70 76 #define MBEDTLS_SSL_MAX_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_3
mbedAustin 11:cada08fc8a70 77 #else
mbedAustin 11:cada08fc8a70 78 #if defined(MBEDTLS_SSL_PROTO_TLS1_1)
mbedAustin 11:cada08fc8a70 79 #define MBEDTLS_SSL_MAX_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_2
mbedAustin 11:cada08fc8a70 80 #else
mbedAustin 11:cada08fc8a70 81 #if defined(MBEDTLS_SSL_PROTO_TLS1)
mbedAustin 11:cada08fc8a70 82 #define MBEDTLS_SSL_MAX_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_1
mbedAustin 11:cada08fc8a70 83 #else
mbedAustin 11:cada08fc8a70 84 #if defined(MBEDTLS_SSL_PROTO_SSL3)
mbedAustin 11:cada08fc8a70 85 #define MBEDTLS_SSL_MAX_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_0
mbedAustin 11:cada08fc8a70 86 #endif /* MBEDTLS_SSL_PROTO_SSL3 */
mbedAustin 11:cada08fc8a70 87 #endif /* MBEDTLS_SSL_PROTO_TLS1 */
mbedAustin 11:cada08fc8a70 88 #endif /* MBEDTLS_SSL_PROTO_TLS1_1 */
mbedAustin 11:cada08fc8a70 89 #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
mbedAustin 11:cada08fc8a70 90
mbedAustin 11:cada08fc8a70 91 #define MBEDTLS_SSL_INITIAL_HANDSHAKE 0
mbedAustin 11:cada08fc8a70 92 #define MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS 1 /* In progress */
mbedAustin 11:cada08fc8a70 93 #define MBEDTLS_SSL_RENEGOTIATION_DONE 2 /* Done or aborted */
mbedAustin 11:cada08fc8a70 94 #define MBEDTLS_SSL_RENEGOTIATION_PENDING 3 /* Requested (server only) */
mbedAustin 11:cada08fc8a70 95
mbedAustin 11:cada08fc8a70 96 /*
mbedAustin 11:cada08fc8a70 97 * DTLS retransmission states, see RFC 6347 4.2.4
mbedAustin 11:cada08fc8a70 98 *
mbedAustin 11:cada08fc8a70 99 * The SENDING state is merged in PREPARING for initial sends,
mbedAustin 11:cada08fc8a70 100 * but is distinct for resends.
mbedAustin 11:cada08fc8a70 101 *
mbedAustin 11:cada08fc8a70 102 * Note: initial state is wrong for server, but is not used anyway.
mbedAustin 11:cada08fc8a70 103 */
mbedAustin 11:cada08fc8a70 104 #define MBEDTLS_SSL_RETRANS_PREPARING 0
mbedAustin 11:cada08fc8a70 105 #define MBEDTLS_SSL_RETRANS_SENDING 1
mbedAustin 11:cada08fc8a70 106 #define MBEDTLS_SSL_RETRANS_WAITING 2
mbedAustin 11:cada08fc8a70 107 #define MBEDTLS_SSL_RETRANS_FINISHED 3
mbedAustin 11:cada08fc8a70 108
mbedAustin 11:cada08fc8a70 109 /*
mbedAustin 11:cada08fc8a70 110 * Allow extra bytes for record, authentication and encryption overhead:
mbedAustin 11:cada08fc8a70 111 * counter (8) + header (5) + IV(16) + MAC (16-48) + padding (0-256)
mbedAustin 11:cada08fc8a70 112 * and allow for a maximum of 1024 of compression expansion if
mbedAustin 11:cada08fc8a70 113 * enabled.
mbedAustin 11:cada08fc8a70 114 */
mbedAustin 11:cada08fc8a70 115 #if defined(MBEDTLS_ZLIB_SUPPORT)
mbedAustin 11:cada08fc8a70 116 #define MBEDTLS_SSL_COMPRESSION_ADD 1024
mbedAustin 11:cada08fc8a70 117 #else
mbedAustin 11:cada08fc8a70 118 #define MBEDTLS_SSL_COMPRESSION_ADD 0
mbedAustin 11:cada08fc8a70 119 #endif
mbedAustin 11:cada08fc8a70 120
mbedAustin 11:cada08fc8a70 121 #if defined(MBEDTLS_ARC4_C) || defined(MBEDTLS_CIPHER_MODE_CBC)
mbedAustin 11:cada08fc8a70 122 /* Ciphersuites using HMAC */
mbedAustin 11:cada08fc8a70 123 #if defined(MBEDTLS_SHA512_C)
mbedAustin 11:cada08fc8a70 124 #define MBEDTLS_SSL_MAC_ADD 48 /* SHA-384 used for HMAC */
mbedAustin 11:cada08fc8a70 125 #elif defined(MBEDTLS_SHA256_C)
mbedAustin 11:cada08fc8a70 126 #define MBEDTLS_SSL_MAC_ADD 32 /* SHA-256 used for HMAC */
mbedAustin 11:cada08fc8a70 127 #else
mbedAustin 11:cada08fc8a70 128 #define MBEDTLS_SSL_MAC_ADD 20 /* SHA-1 used for HMAC */
mbedAustin 11:cada08fc8a70 129 #endif
mbedAustin 11:cada08fc8a70 130 #else
mbedAustin 11:cada08fc8a70 131 /* AEAD ciphersuites: GCM and CCM use a 128 bits tag */
mbedAustin 11:cada08fc8a70 132 #define MBEDTLS_SSL_MAC_ADD 16
mbedAustin 11:cada08fc8a70 133 #endif
mbedAustin 11:cada08fc8a70 134
mbedAustin 11:cada08fc8a70 135 #if defined(MBEDTLS_CIPHER_MODE_CBC)
mbedAustin 11:cada08fc8a70 136 #define MBEDTLS_SSL_PADDING_ADD 256
mbedAustin 11:cada08fc8a70 137 #else
mbedAustin 11:cada08fc8a70 138 #define MBEDTLS_SSL_PADDING_ADD 0
mbedAustin 11:cada08fc8a70 139 #endif
mbedAustin 11:cada08fc8a70 140
mbedAustin 11:cada08fc8a70 141 #define MBEDTLS_SSL_BUFFER_LEN ( MBEDTLS_SSL_MAX_CONTENT_LEN \
mbedAustin 11:cada08fc8a70 142 + MBEDTLS_SSL_COMPRESSION_ADD \
mbedAustin 11:cada08fc8a70 143 + 29 /* counter + header + IV */ \
mbedAustin 11:cada08fc8a70 144 + MBEDTLS_SSL_MAC_ADD \
mbedAustin 11:cada08fc8a70 145 + MBEDTLS_SSL_PADDING_ADD \
mbedAustin 11:cada08fc8a70 146 )
mbedAustin 11:cada08fc8a70 147
mbedAustin 11:cada08fc8a70 148 /*
mbedAustin 11:cada08fc8a70 149 * TLS extension flags (for extensions with outgoing ServerHello content
mbedAustin 11:cada08fc8a70 150 * that need it (e.g. for RENEGOTIATION_INFO the server already knows because
mbedAustin 11:cada08fc8a70 151 * of state of the renegotiation flag, so no indicator is required)
mbedAustin 11:cada08fc8a70 152 */
mbedAustin 11:cada08fc8a70 153 #define MBEDTLS_TLS_EXT_SUPPORTED_POINT_FORMATS_PRESENT (1 << 0)
mbedAustin 11:cada08fc8a70 154 #define MBEDTLS_TLS_EXT_ECJPAKE_KKPP_OK (1 << 1)
mbedAustin 11:cada08fc8a70 155
mbedAustin 11:cada08fc8a70 156 #ifdef __cplusplus
mbedAustin 11:cada08fc8a70 157 extern "C" {
mbedAustin 11:cada08fc8a70 158 #endif
mbedAustin 11:cada08fc8a70 159
mbedAustin 11:cada08fc8a70 160 /*
mbedAustin 11:cada08fc8a70 161 * This structure contains the parameters only needed during handshake.
mbedAustin 11:cada08fc8a70 162 */
mbedAustin 11:cada08fc8a70 163 struct mbedtls_ssl_handshake_params
mbedAustin 11:cada08fc8a70 164 {
mbedAustin 11:cada08fc8a70 165 /*
mbedAustin 11:cada08fc8a70 166 * Handshake specific crypto variables
mbedAustin 11:cada08fc8a70 167 */
mbedAustin 11:cada08fc8a70 168 int sig_alg; /*!< Hash algorithm for signature */
mbedAustin 11:cada08fc8a70 169 int cert_type; /*!< Requested cert type */
mbedAustin 11:cada08fc8a70 170 int verify_sig_alg; /*!< Signature algorithm for verify */
mbedAustin 11:cada08fc8a70 171 #if defined(MBEDTLS_DHM_C)
mbedAustin 11:cada08fc8a70 172 mbedtls_dhm_context dhm_ctx; /*!< DHM key exchange */
mbedAustin 11:cada08fc8a70 173 #endif
mbedAustin 11:cada08fc8a70 174 #if defined(MBEDTLS_ECDH_C)
mbedAustin 11:cada08fc8a70 175 mbedtls_ecdh_context ecdh_ctx; /*!< ECDH key exchange */
mbedAustin 11:cada08fc8a70 176 #endif
mbedAustin 11:cada08fc8a70 177 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
mbedAustin 11:cada08fc8a70 178 mbedtls_ecjpake_context ecjpake_ctx; /*!< EC J-PAKE key exchange */
mbedAustin 11:cada08fc8a70 179 #if defined(MBEDTLS_SSL_CLI_C)
mbedAustin 11:cada08fc8a70 180 unsigned char *ecjpake_cache; /*!< Cache for ClientHello ext */
mbedAustin 11:cada08fc8a70 181 size_t ecjpake_cache_len; /*!< Length of cached data */
mbedAustin 11:cada08fc8a70 182 #endif
mbedAustin 11:cada08fc8a70 183 #endif
mbedAustin 11:cada08fc8a70 184 #if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \
mbedAustin 11:cada08fc8a70 185 defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
mbedAustin 11:cada08fc8a70 186 const mbedtls_ecp_curve_info **curves; /*!< Supported elliptic curves */
mbedAustin 11:cada08fc8a70 187 #endif
mbedAustin 11:cada08fc8a70 188 #if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
mbedAustin 11:cada08fc8a70 189 unsigned char *psk; /*!< PSK from the callback */
mbedAustin 11:cada08fc8a70 190 size_t psk_len; /*!< Length of PSK from callback */
mbedAustin 11:cada08fc8a70 191 #endif
mbedAustin 11:cada08fc8a70 192 #if defined(MBEDTLS_X509_CRT_PARSE_C)
mbedAustin 11:cada08fc8a70 193 mbedtls_ssl_key_cert *key_cert; /*!< chosen key/cert pair (server) */
mbedAustin 11:cada08fc8a70 194 #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
mbedAustin 11:cada08fc8a70 195 int sni_authmode; /*!< authmode from SNI callback */
mbedAustin 11:cada08fc8a70 196 mbedtls_ssl_key_cert *sni_key_cert; /*!< key/cert list from SNI */
mbedAustin 11:cada08fc8a70 197 mbedtls_x509_crt *sni_ca_chain; /*!< trusted CAs from SNI callback */
mbedAustin 11:cada08fc8a70 198 mbedtls_x509_crl *sni_ca_crl; /*!< trusted CAs CRLs from SNI */
mbedAustin 11:cada08fc8a70 199 #endif
mbedAustin 11:cada08fc8a70 200 #endif /* MBEDTLS_X509_CRT_PARSE_C */
mbedAustin 11:cada08fc8a70 201 #if defined(MBEDTLS_SSL_PROTO_DTLS)
mbedAustin 11:cada08fc8a70 202 unsigned int out_msg_seq; /*!< Outgoing handshake sequence number */
mbedAustin 11:cada08fc8a70 203 unsigned int in_msg_seq; /*!< Incoming handshake sequence number */
mbedAustin 11:cada08fc8a70 204
mbedAustin 11:cada08fc8a70 205 unsigned char *verify_cookie; /*!< Cli: HelloVerifyRequest cookie
mbedAustin 11:cada08fc8a70 206 Srv: unused */
mbedAustin 11:cada08fc8a70 207 unsigned char verify_cookie_len; /*!< Cli: cookie length
mbedAustin 11:cada08fc8a70 208 Srv: flag for sending a cookie */
mbedAustin 11:cada08fc8a70 209
mbedAustin 11:cada08fc8a70 210 unsigned char *hs_msg; /*!< Reassembled handshake message */
mbedAustin 11:cada08fc8a70 211
mbedAustin 11:cada08fc8a70 212 uint32_t retransmit_timeout; /*!< Current value of timeout */
mbedAustin 11:cada08fc8a70 213 unsigned char retransmit_state; /*!< Retransmission state */
mbedAustin 11:cada08fc8a70 214 mbedtls_ssl_flight_item *flight; /*!< Current outgoing flight */
mbedAustin 11:cada08fc8a70 215 mbedtls_ssl_flight_item *cur_msg; /*!< Current message in flight */
mbedAustin 11:cada08fc8a70 216 unsigned int in_flight_start_seq; /*!< Minimum message sequence in the
mbedAustin 11:cada08fc8a70 217 flight being received */
mbedAustin 11:cada08fc8a70 218 mbedtls_ssl_transform *alt_transform_out; /*!< Alternative transform for
mbedAustin 11:cada08fc8a70 219 resending messages */
mbedAustin 11:cada08fc8a70 220 unsigned char alt_out_ctr[8]; /*!< Alternative record epoch/counter
mbedAustin 11:cada08fc8a70 221 for resending messages */
mbedAustin 11:cada08fc8a70 222 #endif
mbedAustin 11:cada08fc8a70 223
mbedAustin 11:cada08fc8a70 224 /*
mbedAustin 11:cada08fc8a70 225 * Checksum contexts
mbedAustin 11:cada08fc8a70 226 */
mbedAustin 11:cada08fc8a70 227 #if defined(MBEDTLS_SSL_PROTO_SSL3) || defined(MBEDTLS_SSL_PROTO_TLS1) || \
mbedAustin 11:cada08fc8a70 228 defined(MBEDTLS_SSL_PROTO_TLS1_1)
mbedAustin 11:cada08fc8a70 229 mbedtls_md5_context fin_md5;
mbedAustin 11:cada08fc8a70 230 mbedtls_sha1_context fin_sha1;
mbedAustin 11:cada08fc8a70 231 #endif
mbedAustin 11:cada08fc8a70 232 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
mbedAustin 11:cada08fc8a70 233 #if defined(MBEDTLS_SHA256_C)
mbedAustin 11:cada08fc8a70 234 mbedtls_sha256_context fin_sha256;
mbedAustin 11:cada08fc8a70 235 #endif
mbedAustin 11:cada08fc8a70 236 #if defined(MBEDTLS_SHA512_C)
mbedAustin 11:cada08fc8a70 237 mbedtls_sha512_context fin_sha512;
mbedAustin 11:cada08fc8a70 238 #endif
mbedAustin 11:cada08fc8a70 239 #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
mbedAustin 11:cada08fc8a70 240
mbedAustin 11:cada08fc8a70 241 void (*update_checksum)(mbedtls_ssl_context *, const unsigned char *, size_t);
mbedAustin 11:cada08fc8a70 242 void (*calc_verify)(mbedtls_ssl_context *, unsigned char *);
mbedAustin 11:cada08fc8a70 243 void (*calc_finished)(mbedtls_ssl_context *, unsigned char *, int);
mbedAustin 11:cada08fc8a70 244 int (*tls_prf)(const unsigned char *, size_t, const char *,
mbedAustin 11:cada08fc8a70 245 const unsigned char *, size_t,
mbedAustin 11:cada08fc8a70 246 unsigned char *, size_t);
mbedAustin 11:cada08fc8a70 247
mbedAustin 11:cada08fc8a70 248 size_t pmslen; /*!< premaster length */
mbedAustin 11:cada08fc8a70 249
mbedAustin 11:cada08fc8a70 250 unsigned char randbytes[64]; /*!< random bytes */
mbedAustin 11:cada08fc8a70 251 unsigned char premaster[MBEDTLS_PREMASTER_SIZE];
mbedAustin 11:cada08fc8a70 252 /*!< premaster secret */
mbedAustin 11:cada08fc8a70 253
mbedAustin 11:cada08fc8a70 254 int resume; /*!< session resume indicator*/
mbedAustin 11:cada08fc8a70 255 int max_major_ver; /*!< max. major version client*/
mbedAustin 11:cada08fc8a70 256 int max_minor_ver; /*!< max. minor version client*/
mbedAustin 11:cada08fc8a70 257 int cli_exts; /*!< client extension presence*/
mbedAustin 11:cada08fc8a70 258
mbedAustin 11:cada08fc8a70 259 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
mbedAustin 11:cada08fc8a70 260 int new_session_ticket; /*!< use NewSessionTicket? */
mbedAustin 11:cada08fc8a70 261 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
mbedAustin 11:cada08fc8a70 262 #if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
mbedAustin 11:cada08fc8a70 263 int extended_ms; /*!< use Extended Master Secret? */
mbedAustin 11:cada08fc8a70 264 #endif
mbedAustin 11:cada08fc8a70 265 };
mbedAustin 11:cada08fc8a70 266
mbedAustin 11:cada08fc8a70 267 /*
mbedAustin 11:cada08fc8a70 268 * This structure contains a full set of runtime transform parameters
mbedAustin 11:cada08fc8a70 269 * either in negotiation or active.
mbedAustin 11:cada08fc8a70 270 */
mbedAustin 11:cada08fc8a70 271 struct mbedtls_ssl_transform
mbedAustin 11:cada08fc8a70 272 {
mbedAustin 11:cada08fc8a70 273 /*
mbedAustin 11:cada08fc8a70 274 * Session specific crypto layer
mbedAustin 11:cada08fc8a70 275 */
mbedAustin 11:cada08fc8a70 276 const mbedtls_ssl_ciphersuite_t *ciphersuite_info;
mbedAustin 11:cada08fc8a70 277 /*!< Chosen cipersuite_info */
mbedAustin 11:cada08fc8a70 278 unsigned int keylen; /*!< symmetric key length (bytes) */
mbedAustin 11:cada08fc8a70 279 size_t minlen; /*!< min. ciphertext length */
mbedAustin 11:cada08fc8a70 280 size_t ivlen; /*!< IV length */
mbedAustin 11:cada08fc8a70 281 size_t fixed_ivlen; /*!< Fixed part of IV (AEAD) */
mbedAustin 11:cada08fc8a70 282 size_t maclen; /*!< MAC length */
mbedAustin 11:cada08fc8a70 283
mbedAustin 11:cada08fc8a70 284 unsigned char iv_enc[16]; /*!< IV (encryption) */
mbedAustin 11:cada08fc8a70 285 unsigned char iv_dec[16]; /*!< IV (decryption) */
mbedAustin 11:cada08fc8a70 286
mbedAustin 11:cada08fc8a70 287 #if defined(MBEDTLS_SSL_PROTO_SSL3)
mbedAustin 11:cada08fc8a70 288 /* Needed only for SSL v3.0 secret */
mbedAustin 11:cada08fc8a70 289 unsigned char mac_enc[20]; /*!< SSL v3.0 secret (enc) */
mbedAustin 11:cada08fc8a70 290 unsigned char mac_dec[20]; /*!< SSL v3.0 secret (dec) */
mbedAustin 11:cada08fc8a70 291 #endif /* MBEDTLS_SSL_PROTO_SSL3 */
mbedAustin 11:cada08fc8a70 292
mbedAustin 11:cada08fc8a70 293 mbedtls_md_context_t md_ctx_enc; /*!< MAC (encryption) */
mbedAustin 11:cada08fc8a70 294 mbedtls_md_context_t md_ctx_dec; /*!< MAC (decryption) */
mbedAustin 11:cada08fc8a70 295
mbedAustin 11:cada08fc8a70 296 mbedtls_cipher_context_t cipher_ctx_enc; /*!< encryption context */
mbedAustin 11:cada08fc8a70 297 mbedtls_cipher_context_t cipher_ctx_dec; /*!< decryption context */
mbedAustin 11:cada08fc8a70 298
mbedAustin 11:cada08fc8a70 299 /*
mbedAustin 11:cada08fc8a70 300 * Session specific compression layer
mbedAustin 11:cada08fc8a70 301 */
mbedAustin 11:cada08fc8a70 302 #if defined(MBEDTLS_ZLIB_SUPPORT)
mbedAustin 11:cada08fc8a70 303 z_stream ctx_deflate; /*!< compression context */
mbedAustin 11:cada08fc8a70 304 z_stream ctx_inflate; /*!< decompression context */
mbedAustin 11:cada08fc8a70 305 #endif
mbedAustin 11:cada08fc8a70 306 };
mbedAustin 11:cada08fc8a70 307
mbedAustin 11:cada08fc8a70 308 #if defined(MBEDTLS_X509_CRT_PARSE_C)
mbedAustin 11:cada08fc8a70 309 /*
mbedAustin 11:cada08fc8a70 310 * List of certificate + private key pairs
mbedAustin 11:cada08fc8a70 311 */
mbedAustin 11:cada08fc8a70 312 struct mbedtls_ssl_key_cert
mbedAustin 11:cada08fc8a70 313 {
mbedAustin 11:cada08fc8a70 314 mbedtls_x509_crt *cert; /*!< cert */
mbedAustin 11:cada08fc8a70 315 mbedtls_pk_context *key; /*!< private key */
mbedAustin 11:cada08fc8a70 316 mbedtls_ssl_key_cert *next; /*!< next key/cert pair */
mbedAustin 11:cada08fc8a70 317 };
mbedAustin 11:cada08fc8a70 318 #endif /* MBEDTLS_X509_CRT_PARSE_C */
mbedAustin 11:cada08fc8a70 319
mbedAustin 11:cada08fc8a70 320 #if defined(MBEDTLS_SSL_PROTO_DTLS)
mbedAustin 11:cada08fc8a70 321 /*
mbedAustin 11:cada08fc8a70 322 * List of handshake messages kept around for resending
mbedAustin 11:cada08fc8a70 323 */
mbedAustin 11:cada08fc8a70 324 struct mbedtls_ssl_flight_item
mbedAustin 11:cada08fc8a70 325 {
mbedAustin 11:cada08fc8a70 326 unsigned char *p; /*!< message, including handshake headers */
mbedAustin 11:cada08fc8a70 327 size_t len; /*!< length of p */
mbedAustin 11:cada08fc8a70 328 unsigned char type; /*!< type of the message: handshake or CCS */
mbedAustin 11:cada08fc8a70 329 mbedtls_ssl_flight_item *next; /*!< next handshake message(s) */
mbedAustin 11:cada08fc8a70 330 };
mbedAustin 11:cada08fc8a70 331 #endif /* MBEDTLS_SSL_PROTO_DTLS */
mbedAustin 11:cada08fc8a70 332
mbedAustin 11:cada08fc8a70 333
mbedAustin 11:cada08fc8a70 334 /**
mbedAustin 11:cada08fc8a70 335 * \brief Free referenced items in an SSL transform context and clear
mbedAustin 11:cada08fc8a70 336 * memory
mbedAustin 11:cada08fc8a70 337 *
mbedAustin 11:cada08fc8a70 338 * \param transform SSL transform context
mbedAustin 11:cada08fc8a70 339 */
mbedAustin 11:cada08fc8a70 340 void mbedtls_ssl_transform_free( mbedtls_ssl_transform *transform );
mbedAustin 11:cada08fc8a70 341
mbedAustin 11:cada08fc8a70 342 /**
mbedAustin 11:cada08fc8a70 343 * \brief Free referenced items in an SSL handshake context and clear
mbedAustin 11:cada08fc8a70 344 * memory
mbedAustin 11:cada08fc8a70 345 *
mbedAustin 11:cada08fc8a70 346 * \param handshake SSL handshake context
mbedAustin 11:cada08fc8a70 347 */
mbedAustin 11:cada08fc8a70 348 void mbedtls_ssl_handshake_free( mbedtls_ssl_handshake_params *handshake );
mbedAustin 11:cada08fc8a70 349
mbedAustin 11:cada08fc8a70 350 int mbedtls_ssl_handshake_client_step( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 351 int mbedtls_ssl_handshake_server_step( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 352 void mbedtls_ssl_handshake_wrapup( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 353
mbedAustin 11:cada08fc8a70 354 int mbedtls_ssl_send_fatal_handshake_failure( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 355
mbedAustin 11:cada08fc8a70 356 void mbedtls_ssl_reset_checksum( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 357 int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 358
mbedAustin 11:cada08fc8a70 359 int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 360 int mbedtls_ssl_fetch_input( mbedtls_ssl_context *ssl, size_t nb_want );
mbedAustin 11:cada08fc8a70 361
mbedAustin 11:cada08fc8a70 362 int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 363 int mbedtls_ssl_flush_output( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 364
mbedAustin 11:cada08fc8a70 365 int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 366 int mbedtls_ssl_write_certificate( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 367
mbedAustin 11:cada08fc8a70 368 int mbedtls_ssl_parse_change_cipher_spec( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 369 int mbedtls_ssl_write_change_cipher_spec( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 370
mbedAustin 11:cada08fc8a70 371 int mbedtls_ssl_parse_finished( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 372 int mbedtls_ssl_write_finished( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 373
mbedAustin 11:cada08fc8a70 374 void mbedtls_ssl_optimize_checksum( mbedtls_ssl_context *ssl,
mbedAustin 11:cada08fc8a70 375 const mbedtls_ssl_ciphersuite_t *ciphersuite_info );
mbedAustin 11:cada08fc8a70 376
mbedAustin 11:cada08fc8a70 377 #if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
mbedAustin 11:cada08fc8a70 378 int mbedtls_ssl_psk_derive_premaster( mbedtls_ssl_context *ssl, mbedtls_key_exchange_type_t key_ex );
mbedAustin 11:cada08fc8a70 379 #endif
mbedAustin 11:cada08fc8a70 380
mbedAustin 11:cada08fc8a70 381 #if defined(MBEDTLS_PK_C)
mbedAustin 11:cada08fc8a70 382 unsigned char mbedtls_ssl_sig_from_pk( mbedtls_pk_context *pk );
mbedAustin 11:cada08fc8a70 383 mbedtls_pk_type_t mbedtls_ssl_pk_alg_from_sig( unsigned char sig );
mbedAustin 11:cada08fc8a70 384 #endif
mbedAustin 11:cada08fc8a70 385
mbedAustin 11:cada08fc8a70 386 mbedtls_md_type_t mbedtls_ssl_md_alg_from_hash( unsigned char hash );
mbedAustin 11:cada08fc8a70 387 unsigned char mbedtls_ssl_hash_from_md_alg( int md );
mbedAustin 11:cada08fc8a70 388
mbedAustin 11:cada08fc8a70 389 #if defined(MBEDTLS_ECP_C)
mbedAustin 11:cada08fc8a70 390 int mbedtls_ssl_check_curve( const mbedtls_ssl_context *ssl, mbedtls_ecp_group_id grp_id );
mbedAustin 11:cada08fc8a70 391 #endif
mbedAustin 11:cada08fc8a70 392
mbedAustin 11:cada08fc8a70 393 #if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED)
mbedAustin 11:cada08fc8a70 394 int mbedtls_ssl_check_sig_hash( const mbedtls_ssl_context *ssl,
mbedAustin 11:cada08fc8a70 395 mbedtls_md_type_t md );
mbedAustin 11:cada08fc8a70 396 #endif
mbedAustin 11:cada08fc8a70 397
mbedAustin 11:cada08fc8a70 398 #if defined(MBEDTLS_X509_CRT_PARSE_C)
mbedAustin 11:cada08fc8a70 399 static inline mbedtls_pk_context *mbedtls_ssl_own_key( mbedtls_ssl_context *ssl )
mbedAustin 11:cada08fc8a70 400 {
mbedAustin 11:cada08fc8a70 401 mbedtls_ssl_key_cert *key_cert;
mbedAustin 11:cada08fc8a70 402
mbedAustin 11:cada08fc8a70 403 if( ssl->handshake != NULL && ssl->handshake->key_cert != NULL )
mbedAustin 11:cada08fc8a70 404 key_cert = ssl->handshake->key_cert;
mbedAustin 11:cada08fc8a70 405 else
mbedAustin 11:cada08fc8a70 406 key_cert = ssl->conf->key_cert;
mbedAustin 11:cada08fc8a70 407
mbedAustin 11:cada08fc8a70 408 return( key_cert == NULL ? NULL : key_cert->key );
mbedAustin 11:cada08fc8a70 409 }
mbedAustin 11:cada08fc8a70 410
mbedAustin 11:cada08fc8a70 411 static inline mbedtls_x509_crt *mbedtls_ssl_own_cert( mbedtls_ssl_context *ssl )
mbedAustin 11:cada08fc8a70 412 {
mbedAustin 11:cada08fc8a70 413 mbedtls_ssl_key_cert *key_cert;
mbedAustin 11:cada08fc8a70 414
mbedAustin 11:cada08fc8a70 415 if( ssl->handshake != NULL && ssl->handshake->key_cert != NULL )
mbedAustin 11:cada08fc8a70 416 key_cert = ssl->handshake->key_cert;
mbedAustin 11:cada08fc8a70 417 else
mbedAustin 11:cada08fc8a70 418 key_cert = ssl->conf->key_cert;
mbedAustin 11:cada08fc8a70 419
mbedAustin 11:cada08fc8a70 420 return( key_cert == NULL ? NULL : key_cert->cert );
mbedAustin 11:cada08fc8a70 421 }
mbedAustin 11:cada08fc8a70 422
mbedAustin 11:cada08fc8a70 423 /*
mbedAustin 11:cada08fc8a70 424 * Check usage of a certificate wrt extensions:
mbedAustin 11:cada08fc8a70 425 * keyUsage, extendedKeyUsage (later), and nSCertType (later).
mbedAustin 11:cada08fc8a70 426 *
mbedAustin 11:cada08fc8a70 427 * Warning: cert_endpoint is the endpoint of the cert (ie, of our peer when we
mbedAustin 11:cada08fc8a70 428 * check a cert we received from them)!
mbedAustin 11:cada08fc8a70 429 *
mbedAustin 11:cada08fc8a70 430 * Return 0 if everything is OK, -1 if not.
mbedAustin 11:cada08fc8a70 431 */
mbedAustin 11:cada08fc8a70 432 int mbedtls_ssl_check_cert_usage( const mbedtls_x509_crt *cert,
mbedAustin 11:cada08fc8a70 433 const mbedtls_ssl_ciphersuite_t *ciphersuite,
mbedAustin 11:cada08fc8a70 434 int cert_endpoint,
mbedAustin 11:cada08fc8a70 435 uint32_t *flags );
mbedAustin 11:cada08fc8a70 436 #endif /* MBEDTLS_X509_CRT_PARSE_C */
mbedAustin 11:cada08fc8a70 437
mbedAustin 11:cada08fc8a70 438 void mbedtls_ssl_write_version( int major, int minor, int transport,
mbedAustin 11:cada08fc8a70 439 unsigned char ver[2] );
mbedAustin 11:cada08fc8a70 440 void mbedtls_ssl_read_version( int *major, int *minor, int transport,
mbedAustin 11:cada08fc8a70 441 const unsigned char ver[2] );
mbedAustin 11:cada08fc8a70 442
mbedAustin 11:cada08fc8a70 443 static inline size_t mbedtls_ssl_hdr_len( const mbedtls_ssl_context *ssl )
mbedAustin 11:cada08fc8a70 444 {
mbedAustin 11:cada08fc8a70 445 #if defined(MBEDTLS_SSL_PROTO_DTLS)
mbedAustin 11:cada08fc8a70 446 if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
mbedAustin 11:cada08fc8a70 447 return( 13 );
mbedAustin 11:cada08fc8a70 448 #else
mbedAustin 11:cada08fc8a70 449 ((void) ssl);
mbedAustin 11:cada08fc8a70 450 #endif
mbedAustin 11:cada08fc8a70 451 return( 5 );
mbedAustin 11:cada08fc8a70 452 }
mbedAustin 11:cada08fc8a70 453
mbedAustin 11:cada08fc8a70 454 static inline size_t mbedtls_ssl_hs_hdr_len( const mbedtls_ssl_context *ssl )
mbedAustin 11:cada08fc8a70 455 {
mbedAustin 11:cada08fc8a70 456 #if defined(MBEDTLS_SSL_PROTO_DTLS)
mbedAustin 11:cada08fc8a70 457 if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
mbedAustin 11:cada08fc8a70 458 return( 12 );
mbedAustin 11:cada08fc8a70 459 #else
mbedAustin 11:cada08fc8a70 460 ((void) ssl);
mbedAustin 11:cada08fc8a70 461 #endif
mbedAustin 11:cada08fc8a70 462 return( 4 );
mbedAustin 11:cada08fc8a70 463 }
mbedAustin 11:cada08fc8a70 464
mbedAustin 11:cada08fc8a70 465 #if defined(MBEDTLS_SSL_PROTO_DTLS)
mbedAustin 11:cada08fc8a70 466 void mbedtls_ssl_send_flight_completed( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 467 void mbedtls_ssl_recv_flight_completed( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 468 int mbedtls_ssl_resend( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 469 #endif
mbedAustin 11:cada08fc8a70 470
mbedAustin 11:cada08fc8a70 471 /* Visible for testing purposes only */
mbedAustin 11:cada08fc8a70 472 #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
mbedAustin 11:cada08fc8a70 473 int mbedtls_ssl_dtls_replay_check( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 474 void mbedtls_ssl_dtls_replay_update( mbedtls_ssl_context *ssl );
mbedAustin 11:cada08fc8a70 475 #endif
mbedAustin 11:cada08fc8a70 476
mbedAustin 11:cada08fc8a70 477 /* constant-time buffer comparison */
mbedAustin 11:cada08fc8a70 478 static inline int mbedtls_ssl_safer_memcmp( const void *a, const void *b, size_t n )
mbedAustin 11:cada08fc8a70 479 {
mbedAustin 11:cada08fc8a70 480 size_t i;
mbedAustin 11:cada08fc8a70 481 const unsigned char *A = (const unsigned char *) a;
mbedAustin 11:cada08fc8a70 482 const unsigned char *B = (const unsigned char *) b;
mbedAustin 11:cada08fc8a70 483 unsigned char diff = 0;
mbedAustin 11:cada08fc8a70 484
mbedAustin 11:cada08fc8a70 485 for( i = 0; i < n; i++ )
mbedAustin 11:cada08fc8a70 486 diff |= A[i] ^ B[i];
mbedAustin 11:cada08fc8a70 487
mbedAustin 11:cada08fc8a70 488 return( diff );
mbedAustin 11:cada08fc8a70 489 }
mbedAustin 11:cada08fc8a70 490
mbedAustin 11:cada08fc8a70 491 #ifdef __cplusplus
mbedAustin 11:cada08fc8a70 492 }
mbedAustin 11:cada08fc8a70 493 #endif
mbedAustin 11:cada08fc8a70 494
mbedAustin 11:cada08fc8a70 495 #endif /* ssl_internal.h */